There have been many discussions of the question whether Helen Keller's achievements are due to her natural ability or to the method by which she was taught. It is true that a teacher with ten times Miss Sullivan's genius could not have made a pupil so remarkable as Helen Keller out of a child born dull and mentally deficient. But it is also true that, with ten times her native genius, Helen Keller could not have grown to what she is, if she had not been excellently taught from the very start, and especially at the start. And the fact remains that she was taught by a method of teaching language to the deaf the essential principles of which are clearly expressed in Miss Sullivan's letters, written while she was discovering the method and putting it successfully into practice. And it can be applied by any teacher to any healthy deaf child, and in the broadest interpretation of the principles, can be applied to the teaching of language of all kinds to all children. In the many discussions of this question writers seem to throw us from one horn to another of a dilemma--either a born genius in Helen Keller, or a perfect method in the teacher. Both things may be true at once, and there is another truth which makes the dilemma imperfect. Miss Sullivan is a person of extraordinary power. Her method might not succeed so completely in the hands of any one else. Miss Sullivan's vigorous, original mind has lent much of its vitality to her pupil. If Miss Keller is fond of language and not interested especially in mathematics, it is not surprising to find Miss Sullivan's interests very similar. And this does not mean that Miss Keller is unduly dependent on her teacher. It is told of her that, as a child of eight, when some one tried to interfere with her, she sat sober a few moments, and, when asked what was the trouble, answered, "I am preparing to assert my independence." Such an aggressive personality cannot grow up in mere dependence even under the guidance of a will like Miss Sullivan's. But Miss Sullivan by her "natural aptitude" has done for her pupil much that is not capable of analysis and reduction to principle; she has given the inspiration which is in all close friendship, and which rather develops than limits the powers of either person. Moreover, if Miss Keller is a "marvel of sweetness and goodness," if she has a love "of all things good and beautiful," this implies something about the teacher who has lived with her for sixteen years.